Improvement of Classical Algebraic Method of Signal Timing for Arterial Road Coordinate Control

AbstractFollowing the design principle of maximum green wave bandwidth and making use of the time-space diagram for arterial road coordinate control, many problems existed in classical algebraic method such as the determination of value range of ideal intersection distance, the calculation of green wave bandwidth, the selection of optimal intersection distance and the value of signal offsets were deeply analyzed through some practical examples. On the basis of detailed analysis, the value range of ideal intersection distance was determined by the allowable value range of common signal cycle, a new calculation method for green wave bandwidth was presented, and a new selection rule of optimal intersection distance was established. The examples effectively demonstrate that the improved classical algebraic method can make arterial road coordinate control system get green wave bandwidth as wide as possible and obtain optimal common signal cycle and green wave bandwidth more practically and accurately.